Dealing with Patents in Software Licenses
Many members of the Open Source community oppose software patents. Software patents, they say, hinder the advancement of software art, and as such, counter the beneficial effects of open and published source code. The risk of infringing a copyright is much less than the risk of infringing a patent. You can avoid infringing a copyright by employing good clean-room practices and writing your own independent version of copyrighted software. On the other hand, a software patent can stop you from making, using or selling the patented invention, even if you didn't copy the inventor's software. This means that you may not be able to avoid infringing a patent no matter how careful you are. Someone you never even heard of can inform you that he or she has a patent and, if you cannot invent around that patented invention, your open-source project may be stopped dead in its tracks.
Like them or not, however, software patents are a reality. Software patents have been blessed repeatedly by Congress and the courts, and by the laws of many other countries. Given this reality, it is important to understand the implications of patents for software licenses so that you can select a license that meets your philosophy and goals.
Consider, from the viewpoint of a licensee of open-source software, three kinds of patents: 1) patents owned by the software licensor, 2) patents owned by third parties and 3) patents owned by the licensee or by the licensee's downstream sublicensees.
Licensor patents: suppose you took a license for some open-source software and then discovered that the licensor has a patent on that software that was not included in the license grant. Without a license to that patent, you could not make, use or sell the software. Whenever I review a software license for a licensee, I make sure there is an express grant “under claims of patents now or hereafter owned or controlled by licensor, to make, use, sell, offer for sale, have made, and/or otherwise dispose of licensed software or portions thereof.” Many open-source licenses, including the BSD license, contain no such provision. In those cases, a patent license may be implied, but I don't recommend relying on an implied license. Wherever possible, make sure you have an explicit license to any necessary patents held by the licensor.
Third-party patents: a software licensor may not be aware of all patents that apply to its software. Some third party suddenly may announce that it owns a patent that covers some aspects of the software. As a licensee of infringing software, you may have to stop using the software despite the license. To deal with this situation, proprietary-software licenses often include an indemnity clause, by which the software licensor indemnifies its licensees against third-party patent claims, promising to refund license fees, provide non-infringing versions of the software or obtain licenses to third-party patents, if third-party patents come to light. But open-source licenses usually don't contain indemnity clauses because licensors of open-source software usually do not collect license fees sufficient to cover the potential costs of the indemnification. So, for most open-source software, the license is “as is” without any warranty of non-infringement. Open-source licensees beware! The risk of third-party patents is usually borne by the licensee.
Licensee patents: the issue of licensee patents is much more subtle than with licensor and third-party patents. Licensors often include so-called “patent retaliation” clauses in their licenses to prevent licensees from using patents offensively against the licensor. Because this issue evokes strong feelings that justify careful discussion, I'm saving that topic for its own column next month.
Whatever your philosophy about software patents, it is important to understand the ways that patents can affect software licenses. It is not enough just to say “I don't like software patents.” Whether you out-license your software to others, or you in-license other's software for your own use, you should make sure that the license fairly expresses your own philosophy and goals relating to patents.
Legal advice must be provided in the course of an attorney-client relationship specifically with reference to all the facts of a particular situation and the law of your jurisdiction. Even though an attorney wrote this article, the information in this article must not be relied upon as a substitute for obtaining specific legal advice from a licensed attorney.
Practical Task Scheduling Deployment
July 20, 2016 12:00 pm CDT
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
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With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide